| Ge_x Si_(1-x)/Si超晶格中纵声学声子的喇曼散射强度研究 |
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| 引用本文： | 金鹰,候永田,秦国刚,张树霖,周国良,俞鸣人. Ge_x Si_(1-x)/Si超晶格中纵声学声子的喇曼散射强度研究[J]. 光散射学报, 1991, 0(Z1) |
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| 作者姓名： | 金鹰 候永田 秦国刚 张树霖 周国良 俞鸣人 |
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| 作者单位： | 北京大学人工微结构和介观物理国家重点实验室，北京大学人工微结构和介观物理国家重点实验室，北京大学物理系，北京大学人工微结构和介观物理国家重点实验室，复旦大学表面物理实验室，复旦大学表面物理实验室 北京 100871，上海 200433，上海 200433 |
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| 摘 要： | 本文用光弹理论,在全面考虑了超晶格中两种材料的声速,质量密度和光弹常数存在差别的基础上,计算了Ge_xSi_(1-x)/Si超晶格中折迭纵声学声子的喇曼散射强度,在高达50cm~(-1)的频率范围内,理论值和实验符合得很好。
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| 关 键 词： | 应变层超晶格 喇曼散射 折迭声学声子 光弹理论 |
Investigation on the Raman Scattering Intensity of Longitudinal Acoustic phonons in Ge_x Si_(1-x) /Si Superlattices |
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| Jin Ying,Hou Yong-Tian,Qin Guo-Gang,Zhang Shu-Lin,Physics Department,Peking University Beijing Zhou Guo-Lian,Yu Ming-Ren,Surface Physics Laboratory,Fudan University,Shanghai. Investigation on the Raman Scattering Intensity of Longitudinal Acoustic phonons in Ge_x Si_(1-x) /Si Superlattices[J]. Chinese Journal of Light Scattering, 1991, 0(Z1) |
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| Authors: | Jin Ying Hou Yong-Tian Qin Guo-Gang Zhang Shu-Lin Physics Department Peking University Beijing Zhou Guo-Lian Yu Ming-Ren Surface Physics Laboratory Fudan University Shanghai |
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| Affiliation: | Jin Ying,Hou Yong-Tian,Qin Guo-Gang,Zhang Shu-Lin,Physics Department,Peking University Beijing 100871Zhou Guo-Lian,Yu Ming-Ren,Surface Physics Laboratory,Fudan University,Shanghai 200433 |
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| Abstract: | We have investigated the Raman scattering intensity of the folded longitudinal acoustic phonons in Ge_x Si_(1-x) / Si superlattices with photoelastic mechanism, taking into account the differences between the acoustic and photoelastic parameters of component materials. The theoretical results fitted the experiments with good precision up to about 50cm~(-1). |
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| Keywords: | Strained layer superlattices Raman scattering Folded acoustic phonons photoelastic mechanism |
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